Indian Railway Catering & Tourism Corporation [IRCTC] — services of railways

I have booked the train for my exam which was going to be held after three hours of reaching of the train at its destination. But the railways are so dumb or irresponsible the train has reached at its destination before half an hour of my exam time which makes me impossible to reach to my exam place on time. Due to which i did n't attempt my exam which was crucial for me. I suggest all my freinds not to book any of the trains on their exam dates rather do take other modes of transportation. Railways are just wastage of time.